I want update and upgrade my droplet which is on 14 to ubuntu 18 but it is failling and getting this error W: Failed to fetch https://packages.sury.org/php/dists/trusty/main/binary-amd64/Packages HttpError404
W: Failed to fetch https://packages.sury.org/php/dists/trusty/main/binary-i386/Packages HttpError404
E: Some index files failed to download. They have been ignored, or old ones used instead.
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.